Practice Questions

Q52.Which of the following potential energy (P. E. ) diagrams represents the SN1 reaction? (1) (2) (3) (4)

Q52.Three complexes, [CoCl(NH3)5]2+(I), [Co(NH3)5H2O]3+(II) and [Co(NH3)6]3+(III) absorb light in the visible region. The correct order of the wavelength of light absorbed by them is: (1) (II) > (I) > (III) (2) (III) > (II) > (I) (3) (I) > (II) > (III) (4) (III) > (I) > (II)

Q52.The complex that has highest crystal field splitting energy (Δ) , is: (1) K3[Co(CN)6] (2) [Co(NH3)5Cl ] Cl2 (3) [Co(NH3)5(H2O)]Cl3 (4) K2[CoCl4]

Q52.The major product of the following reaction is, (1) RCOOH (2) RCHO (3) RCH2NH2 (4) RCONH2

Q52.The number of bridging CO ligand(s) and Co-Co bond(s) in Co2(CO)8, respectively are: (1) 2 and 1 (2) 2 and 0 (3) 0 and 2 (4) 4 and 0

Q52.The major product of the following reaction is: (1) (2) (3) (4)

Q52.Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO2 and a gaseous product. MnO2 reacts with NaCl and concentrated H2SO4 to give a pungent gas Z . X, Y and Z, respectively, are: (1) K3MnO4, K3MnO4 and Cl2 (2) K2MnO4, KMnO4 and Cl2 (3) K2MnO4, KMnO4 and SO2 (4) KMnO4, K2MnO4 and Cl2

Q53.The calculated spin-only magnetic moments BM of the anionic and cationic species of FeH2O6 +2 and Fe CN6 4 - respectively, are: (1) 0 and 4.9 (2) 2.84 and 5.92 (3) 4.9 and 0 (4) 0 and 5.92

Q53.Two complexes CrH2O6 Cl3 A and CrNH36Cl3B are violet and yellow coloured, respectively, The incorrect statement regarding them is: (1) Both are paramagnetic with three unpaired (2) Δ0 value of 𝐴 is less than that of 𝐵 electrons (3) Δ0 values of 𝐴 and 𝐵 are calculated from the (4) Both absorb energies corresponding to their energies violet and yellow light, respectively. complementary colors.

Q53.The major product of the following reaction is (1) (2) (3) (4)

Q53.The incorrect statement is. (1) The spin-only magnetic moments of FeH2O6 2 + (2) The spin-only magnetic moment of and CrH2O6 2 + are nearly similar. NiNH34H2O2 2 + is 2.83 BM . (3) The gemstone, ruby, has Cr3 + ions occupying (4) The color of CoClNH35 2 + is violet as it absorbs the octahedral sites of beryl. the yellow light.

Q53.The major product of the following reaction is: (1) (2) (3) (4)

Q53.p-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives: (1) (2) (3) (4)

Q53. The major product of the following reaction is: JEE Main 2019 (11 Jan Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q53.The major product of the following reaction is: (1) (2) (3) (4) JEE Main 2019 (11 Jan Shift 2) JEE Main Previous Year Paper

Q53.Increasing rate of SN1 reaction in the following compounds is: (I) (II) (III) (IV) JEE Main 2019 (10 Apr Shift 1) JEE Main Previous Year Paper (1) (I) < (II) < (III) < (IV) (2) (II) < (I) < (III) < (IV) (3) (II) < (I) < (IV) < (III) (4) (I) < (II) < (IV) < (III)

Q54.The one that will show optical activity is ( en =ethane −1, 2−diamine) JEE Main 2019 (09 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q54.Complete removal of both the axial ligands (along the z - axis ) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale). (1) (2) (3) (4)

Q54.An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and given positive iodoform test. The compound is: (1) (2) (3) (4)

Q54. The major product of the following reaction is (1) (2) (3) (4)

Q54. The major product of the following reaction is: (1) (2) (3) (4)

Q54. cannot be prepared by: (1) HCHO + PhCH(CH3) CH2 MgX (2) PhCOCH2 CH3 + CH3 MgX (3) CH3 CH2 COCH3 + PhMgX (4) PhCOCH3 + CH3 CH2 MgX

Q54.The crystal field stabilization energy (CFSE) of FeH2O6Cl2 and K2NiCl4, respectively, are: (1) -0.4∆0 and -1.2∆t (2) -2.4∆0 and -1.2∆t (3) -0.4∆0 and -0.8∆t (4) -0.6∆0 and -0.8∆t

Q54.The major product obtained in the following reaction is: JEE Main 2019 (10 Jan Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q54.In the following reaction HCl carbonyl compound +MeOH ⇌acetal Rate of the reaction is the highest for: JEE Main 2019 (09 Apr Shift 2) JEE Main Previous Year Paper (1) Acetone as substrate and methanol in stoichiometric amount (2) Propanal as substrate and methanol in excess (3) Propanal as substrate and methanol in stoichiometric amount (4) Acetone as substrate and methanol in excess